One of the major lacking features in the newest Office: no Metro applications. In fact, the only reason Windows RT has a desktop at all is because the Office team was unable to create Metro applications in time for the release of Windows RT. I often thought this was a classic case of two important divisions within Microsoft not getting along and not being aligned, but now that I have my own Surface RT, I'm starting to realise that there's a far simpler, and thus more likely, explanation: Metro is simply not ready for anything serious - or for anything at all, really.